lemwarm
DeliverabilityEmail warmup and deliverability monitoring from lempire, priced per email address
One of the oldest and most trusted warmup networks in cold email, but its natural home is inside a lemlist subscription, where it costs nothing.
Best for
Teams that send cold email from a tool other than lemlist and want a mature, human-network warmup with technical setup checks attached.
Not great for
A lemlist customer, who already has lemwarm bundled and would be paying twice, and for anyone wanting placement testing or blacklist monitoring in the same tool.
Starting price
$29/sender/mo
Pricing model
Per sender
Free trial
Not advertised
Platforms
Web app
Headquarters
France
lemwarm, in plain terms
lemwarm is the email warmup and deliverability product built by lempire, the French company behind the lemlist outreach platform. It connects to a mailbox in one click for Gmail and Outlook, and also supports Zoho, FastMail and Proton Mail, then exchanges genuine emails across a network the company describes as more than 20,000 healthy domains and real users in over 100 countries. Alongside warming, it checks the technical setup of the sending domain, covering SPF, DKIM, DMARC and MX records, tracks a deliverability score, watches for spam risk in sending patterns and content, and pushes daily tips and alerts. The initial warm-up phase is described in their guide as roughly three to four weeks, with the tool then left on permanently to keep sending patterns steady. Two plans are published: Essential covers automated warm-up, setup checks, reports and the shared network, while Smart adds personalised warm-up emails, warming with your real templates, custom alerts and a network matched to your industry. The most important commercial fact is that lemwarm ships free with every lemlist plan, so the standalone subscription mainly makes sense for teams that send from somewhere other than lemlist. There is no spam placement testing product, no blacklist monitor and no campaign sending in lemwarm itself.
Key features
- Automatic warm-up across a 20,000+ domain network of real users
- Human warm-up emails rather than automated bot replies
- Technical setup check for SPF, DKIM, DMARC and MX records
- Deliverability score with reports and spam risk detection
- Personalised warm-up emails and warming with your own templates on Smart
- Industry-tailored warm-up network on Smart
- Custom deliverability alerts and daily content, sending and setup tips
- Bundled at no extra cost inside every lemlist plan
Pros
- Warm-up runs across a claimed 20,000 plus healthy domains with real users in over 100 countries rather than bot mailboxes
- Technical setup check covers SPF, DKIM, DMARC and MX in the same place as the warming
- Smart plan warms using your real templates, which tests the content you actually send
- One-click connection for Gmail and Outlook, with Zoho, FastMail and Proton Mail also supported
- Included free with every lemlist plan, so lemlist customers pay nothing extra
- Backed by lempire, a long-established French outreach company, and its parent product rates about 4.6 on Trustpilot
Cons
- Priced per email address, so warming twenty mailboxes on Essential is roughly $580 per month at the published monthly rate
- Personalised warm-up emails, custom alerts and the industry-matched network are gated to the $49 Smart plan
- No inbox placement or spam testing product, unlike warmup tools that bundle a spam checker
- Blacklist monitoring is not advertised on the published lemwarm plans
- No free plan or standalone free trial advertised on the lemwarm pricing page, the 14 day trial belongs to lemlist
Cost at scale
10 mailboxes on Essential is about $290 per month at the published $29 monthly rate, or about $240 per month at the $24 annual rate. On Smart the same 10 mailboxes are about $490 monthly or $400 annual, and anything past 10 users moves to a quote
| Plan | Price | Limits | Includes |
|---|---|---|---|
| Essential | $29 per email address / month ($24 quarterly or annual) | One email address per subscription, shared warm-up network, no personalised warm-up content | Automatic email warm-up, Technical setup check, Deliverability reports, Human warm-up emails, Warm-up network of 20,000+ healthy domains |
| Smart | $49 per email address / month ($40 quarterly or annual) | One email address per subscription | Everything in Essential, Personalised warm-up emails, Warm up using your real email templates, Custom deliverability alerts and tips, Warm-up network tailored to your industry |
| Enterprise | Custom quote | Published as being for more than 10 users, quoted by sales | Everything in Smart, Volume pricing, Priority support |
| Included with lemlist | $0 bundled with any lemlist subscription | Requires a lemlist subscription, mailbox limits follow the lemlist plan | lemwarm and built-in deliverability protection ship with every lemlist plan, lemlist runs a 14 day free trial with no card required |
From their published pricing, August 2026. Essential is $29 per email address per month, falling to $24 on annual billing (20 percent off) and $24 on quarterly (10 percent off). Check their pricing page.
What reviews praise
- Agency users report liking the level of control over how aggressively an inbox is warmed
- Reviewers credit lemwarm with lifting accounts out of spam and steadying deliverability scores
- Case studies published by the vendor report open rates in the high eighties and above after warming and DNS fixes
- The parent product lemlist is rated about 4.6 out of 5 on Trustpilot across roughly 125 reviews, with support quality the most praised theme
What reviews flag
- Trustpilot reviewers of the parent product report a learning curve on the wider platform
- Some reviewers of the parent product report slow support replies, alongside many who praise support
- There is no separate lemwarm listing on the major review sites, so standalone sentiment is hard to read
- Buyers note the standalone per-mailbox price is hard to justify when a lemlist subscription includes lemwarm free
Distilled from public reviews and community threads. Not Weezly's opinion, and not a rating.
API access
Not advertised for lemwarm on its own. The parent platform publishes a lemlist developer API
Compliance
GDPR framed terms under French law, with a published lemwarm Data Processing Addendum and privacy policy
Data export
Deliverability reports in-app, no standalone export product advertised
Automation platforms
None advertised on lemwarm itself, automation lives in lemlist
Integrations
GmailGoogle WorkspaceMicrosoft OutlookZoho MailFastMailProton Mail
lemlist- HQ
- Paris, France
- Founded
- Not published for the product. The operating company, lempire SAS, is registered under French law number 823 475 082 with the Paris Trade and Companies Register, registered office at 128 rue La Boetie, 75008 Paris
- Leadership
- Operated by lempire, the company behind lemlist
- Company page
Their published pricing in August 2026 lists Essential at $29 per email address per month and Smart at $49, each falling to $24 and $40 on quarterly or annual billing. Anything above ten users is quoted by sales. Prices are per email address, so a team warming ten mailboxes on Essential is looking at roughly $290 per month at the monthly rate. Check their pricing page for current figures.
Yes. lemlist states that lemwarm and its built-in deliverability protections are included in all lemlist plans, and lemlist itself offers a 14 day free trial with no credit card required. Paying for lemwarm separately is mainly for teams that send from a different platform.
Essential covers automatic warm-up, the technical setup check, deliverability reports and the shared network of 20,000 plus healthy domains. Smart adds personalised warm-up emails, warming with your real templates, custom deliverability alerts and a warm-up network matched to your industry.
Their getting started guide puts the initial warm-up phase at roughly three to four weeks, and recommends leaving lemwarm running afterwards so the sending pattern stays consistent and the deliverability score, blacklist checks and technical settings keep being monitored.
No. lemwarm warms mailboxes and monitors deliverability. Inbox placement testing is not advertised as a separate product, and campaign sending, sequencing and the contact database all live in lemlist rather than lemwarm.
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